Clamp device for electric conductors



T.VARNEY. CLAMP DEVICE FOR ELECTRIC CONDUCTORS.

APPLICATION FILED AUG. 14, 1920.

Patented June 27, 1922.

2 SHEETS-SHEET L FIBJS- /N MENTOR WITNESSES 5. v Q

T. VARNEY.

CLAMP DEVICE FOR ELECTRIC CONDUCTORS.

APPLICATION FILED AUG. 14, I920.

Patented J 11110 27, 1922;

2 SHEETS-SHEET 2.-

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'rnnonoar. vmnr, or sEWIcKLEY, rnnnsrrvama'assrenoa 'ro ALUMINUM oommmror manager rrr'rsnunen, PENNSYLVANIA, a'coarormrron or PENNSYLVANIA.

CL DEVICE FOR ELEGTRICCONDUCTORS. I

To all whom it may concern:

. Be it knownthat I, THEODORE VARNEY, a citizenof the United States, anda resident of Sewickley, in the county of Alle- 'gheny and StateofPennsylvania, have invented certain new and useful Improvements in ClampDevices for Electric Conductors,

hich the following is a specification. his invention relates to a clampintended to hold two wires or cables together in parallel position,usually for the purpose of pro- "vi'ding electrical connections betweentwo cables, but sometimes for mechanical reasons.

It has for its object to provide a clamp for this purpose which shall beadjustable for use with varioussizes' of cable, and will effectivelyengage both cables even though they be of different diameters.

The invention may be clearly understood by reference to the accompanyingdrawings, in which, V

Fig. 1 is a side elevation of the clamp Fig. 2 is an end elevationthereof, show-- ing parallel cables of the same size and having arelatively small diameter being en- .gaged by the clamp;

Fig. 3 is a plan of the clamp;

Fig. 4 is an end elevation similar to Fig. 2 in which] parallel cablesof the same size but having relatively large diameters are beingengaged; p v

Fig. 5 is a similar end elevation showing parallel cables of differentdiameters being engaged Fig. 6 is an end elevation of one of theclampingplates; and

Fig. 7 is a top View thereof. In the drawings, the clamp A comprises twoplates or members 5 and 6 having central openings 7 'therein throughwhich passes -a bolt. 8 provided on one'end with a 'head' 9 and on itsopposite threaded end with a lock washerlO and a nut 11. On the outerfaces of the members 5 and 6 and surrounding the openings 7 are roundedproject-ions or surfaces 7 By reason of these rounded. projections, themembers may be ytightly forced together, even though they are at anangle to each other, shown in Fig. 5. q

.On the inner faces of said members and along each 'side thereof areooves or curved seat portions 12 for the ca les or wires, the

Specification of Letters Patent.

Patented. June 27, 1922.

Application filed August 14,, 192 0. serial no. 403,456.

cables being'indicated by the letter B. Ex tendmg outwardly from theooved seats are spaced apart curved extensions 13. I The 4 extensions 13on one 'side of one-member are preferably staggered with relation tothose less height'than the curved extensions 13.

The lugs 14 are stag ered with relation to the extensions 13. heextensions 13 and the lugs 14 on one side of. one plate 5 are alsostaggered with relation to those on the adjacent side of the other plate6. Thus,

the'projections14 and the extensions 13' on the innerfaces of the platesmesh or interlock so that they may be held close together, as shown inFig.' 2, to permit small cables to be clamped. This interlocking alsoprevents any endwise or sidewise movement of the plates relativelytoeach other.

When sufliciently large cables are bein connected, the projections 14will be raised out of interlocking relation but the rounded extensions13 will still interlock, as shown 1n F 1g. 4:. By reference to Fig. 5,it will be seen that one cable or wire of large diameter and one ofsmall diameter may be connected in the same clamp.

It will beobserved that the curved extensions 13 andthe rounded sides ofthe raised portions or projections 14 serve to. retaln the cables in thegrooved or curved seats .12. By properlypositioning portions ofparallelcables in the grooves onthe opposite sides of the two plates andtightening the nut 11 on the bolt 8, the two plates may be drawn tightlytogether to connect the cables.

What Eclaim is:

1. A clamp for parallel wires or cables capable of use with wires orcables of varying diameters and for simultaneously clamp ing wires orcables of different diameters including a pair of opposed members eachhaving interlocking portions, a plurality of inwardly extendingprojections adapted to interlock, wire engaging seats disposedbetween'the interlocking portions and the said projections, and meansfor securing the opposed members together. 7

2. A clamp for parallel wires or cables capable of use with wires orcables of varying and different diameters including a pair of opposedcentrally apertured members each havin a rounded projection on its outerface, interlocking portions, wire engaging seats, and a central bolthaving means bearing upon the rounded projections of the opposedmembers.

3. A clamp for parallel wires capable of use with wires of varying anddifferent diameters including a pair of opposed clamping plates eachhaving interlocking curved extensions along their side edges, a seriesof projections along each side of the plates but spaced inwardly fromthe curved extensions on the adjacent surfaces of the plates adapt ed tointerlock, wire receiving and clamping means formed between theextensions and projections, and means for clamping the plates together.

4. A clamp for parallel wires capable of use with wires of varying anddifferent diameters comprising a pair of similar opposed clamping plateseach having interlocking curved extensions along their side edges, aseries of projections parallel with each side of the plates but spacedinwardly from the extensions on the adjacent surfaces of the plates andadapted to interlock, wire receiving and clamping means formed betweenthe extensions and projections, and means including a central bolt forclamping the plates together.

5. A clamp for parallel wires comprising a pair of opposed clampingplates having parallel means thereon adapted to coact to engage thewire, spaced apart extensions on the outside edges of said means and oneach plate which are adapted to interlock with similar extensions on theopposite plate, spaced apart projections adjacent the inside edges ofsaid wire engaging means, said projections on the adjacent faces beingadapted to interlock, and means for holding the plates in clampingposition.

6. A clamp for parallel wires comprising a pair of opposed plates havingparallel wire receiving grooves on their adjacent faces, curved spacedapart extensions along the sides of each plate and adjacent the groovesand so arranged that the extensions on one plate interlock with those onthe other, lugs on the inner faces of said plates and adjacent therooves, said lugs on opposite plates being ad apted to inter1ock,an d'means for holding the plates in clamping relation.

eaopeo 7. A clamp for parallel wires comprising a pair of opposed plateshaving parallel wire receiving grooves on their adjacent faces, curvedspaced apart extensions along the sides of each plate and adjacent thegrooves and so arranged that the extensions on one plate interlock withthose on the other, lugs on the inner faces of said plates and adjacentthe grooves, said lugs on opposite plates being of less height than thecurved extensions and adapted to interlock, and means for holding theplates in clamping relation.

8. A clamp for parallel wires comprising a pair of opposed plates,curved seat portions extending longitudinallyalong each side of saidplates on the adjacent faces thereof, spaced apart interlockingextensions on'the outsides of said seat portions, projections adapted tointerlock adjacent inner sides of said seat portions, and means forholding the plates in clamped relation.

9. A clamp for parallel wires comprising apair of opposed plates, curvedseat portions extending along each side of Said plates on the adjacentfaces thereof, spaced apart extensions along the outside of said seatportions, the extensions on one side being staggered with relation tothose on the other and with relation to those on the adjacent side ofthe opposite plate, spaced apart projections adjacent the inner sides ofthe seat portions and which are staggered with relation to saidextensions, said extensions and projections being adapted to form wireengaging means, and means for holding the plates in clamped relation.

10. A clamp for wires or cables including a pair of opposed members, oneof which has a rounded projection on its outer face,

each member having interlocking portions and wire engagin seats, andmeans bearing upon the rounde portion for securing the opposed memberstogether, said rounded portion co-acting with the securing means in suchmanner as to allow for the angular adjustment of said clamp members whenbeing clamped together.

In testimony whereof I aflix my signature in presence of two witnesses.

THEODORE VARNEY. Witnesses:

J. M. GEOGHEGAN, Lois WINEMAN.

